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15. Phase transition behavior and structure of the thermotropic liquid crystal 6-{[(4''''-{[(undecyl)carbonyl]oxy}biphenyl-4yl)carbonyl]oxy}-1-hexyne
The phase transition behaviors and corresponding structures of 6-{[(4’-{[(undecyl)carbonyl]oxy}biphenyl-4yl)carbonyl]oxy}-1-hexyne (A4EE11) were investigated using differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and wide angle X-ray diffraction (WAXD).
http://www.polymer.cn//ss/jianxingeng/publicationsshow_13906.html |
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14. Phase structure and transition behavior of a liquid crystal 5-{[(4''-heptoxy-4-biphenylyl)oxy]carbonyl}-1-pentyne
The phase structures and transition behaviors of a novel liquid crystal compound containing biphenylyl mesogen, 5-{[(4V-heptoxy-4-biphenylyl) oxy]carbonyl}-1-pentyne (A3EVO7), have been investigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and wide angle X-ray diffraction (WAXD).
http://www.polymer.cn//ss/jianxingeng/publicationsshow_13905.html |
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Facile design of transition metal based organophosphorus hybrids towards the flame retardancy reinforcement and toxic effluent elimination of polystyrene
https://doi.org/10.1016/j.matchemphys.2018.04.100
http://www.polymer.cn//ss/yanghongyu/publicationsshow_13367.html |
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Facile synthesis of recyclable Zn(II)- metallosupramolecular polymers and the visual detection of tensile strength and glass transition temperature
We have successfully constructed a novel type of recyclable crosslinked Zn(II) metallosupramolecular coordination polymer, which possessed outstanding thermal stability and mechanical properties. More importantly, the tensile strength (RM) and glass transition temperature (Tg) of the resulting crosslinked films could be visually detected by taking advantage of the transparency decreasing effect ...
http://www.polymer.cn//ss/changguanjun/publicationsshow_13355.html |
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Metal-coordination crosslinked N-polyindoles as recyclable high-performance thermosets and nondestructive detection for their tensile strength and glass transition temperature
Metal coordination crosslinking between stiff N-polyindole chains was constructed, and the crosslinked films exhibited high tensile strength, high heat resistance and excellent polar solvent resistance. The noncovalent crosslinking can be further removed via external pyrophosphate, which endows the crosslinked polymer with a recyclable behavior. The tensile strength and glass transition temperat...
http://www.polymer.cn//ss/changguanjun/publicationsshow_13352.html |
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[Nature Chemistry] Photoswitching of Glass Transition Temperatures of Azobenzene-containing Polymers Induces Reversible Solid-to-liquid Ttransitions
The development of polymers with switchable glass transition temperatures (Tg) can address scientific challenges such as the healing of cracks in high-Tg polymers and the processing of hard polymers at room temperature without using plasticizing solvents. Here, we demonstrate that light can switch the Tg of azobenzene-containing polymers (azopolymers) and induce reversible solid-to-liquid transi...
http://www.polymer.cn//ss/zhouhongwei/publicationsshow_13145.html |
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(Chinese Journal of Polymer Science)Diethanol Ammonium-borate Based Polybetaine with Tunable UCST Phase Transition*
A betaine-type styrene monomer with the quaternary ammonium-borate anion inner-salt pair was synthesized through the quaternization reaction and polymerized to afford the target polybetaine of poly(4-vinylbenzyl methyl-diethanol ammonium borate) (PVMAB). The chemical structures of the monomer and polymer were well demonstrated with 1H-NMR and 11B-NMR spectra analysis. The thermal-sensitive exper...
http://www.polymer.cn//ss/jiangjq/publicationsshow_12999.html |
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017. Multiscale modeling of glass transition in polymeric films: Application to stereoregular poly(methyl methacrylate)s
The multiscale modeling scheme has been extended to derive the coarse-grained potentials for simulating glass transition temperatures (Tg) of the bulks and the freely-standing films of two stereoregular poly (methyl methacrylate) (PMMA) configurations. The extensive molecular dynamics simulations reasonably reproduce the volumetric properties. Furthermore, the “dynamical Tg” sensibly exhibits ...
http://www.polymer.cn//ss/wuchaofu/publicationsshow_12941.html |
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Phase Behaviors and 2D-3D Morphological Transition of Aromatic Schiff Base Derivatives in Organized Molecular Films
Phase Behaviors and 2D-3D Morphological Transition of Aromatic Schiff Base
Derivatives in Organized Molecular Films
http://www.polymer.cn//ss/tifengjiao/publicationsshow_12851.html |
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Multitemperature Memory Actuation of a Liquid Crystal Polymer Network over a Broad Nematic–Isotropic Phase Transition Induced by Large Strain
The shape change of a polymer actuator based on liquid crystal network (LCN) generally occurs over a relatively sharp LC-isotropic phase transition. Reported herein is the discovery of an unusual phenomenon and the enabled actuation control for LCN. The smectic phase of a LCN with mesogenic moieties on the chain backbone can be suppressed by high elongation of the specimen, which gives rise to a...
http://www.polymer.cn//ss/yangrong/publicationsshow_12699.html |
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